| A |
|
| Accuracy |
The
'closeness' of a measurement to the true value. |
| Acetic
Acid |
The trivial
name for ethanoic acid. |
| Acetone |
The
trivial name for propanone. |
| Acid
Wash |
A technique
where a dilute solution of acid is used to extract basic compounds
out of an organic solution using a separating funnel. |
| Aliquot
|
A
portion of solution, usually measured with a volumetric pipette. |
| Analyte |
A substance
that is determined in a quantitative procedure such as volumetric
analysis. |
| Anti
- Bumping Granule |
Small
pieces of a ceramic material that are added to solutions to prevent
the solution 'bumping' (see also). |
| Aqueous
Wash |
A technique
where water is used to extract ionic impurities out of an organic
solution using a separating funnel. |
| Aspirator |
Also
known as a filter pump, a device that produces a vacuum (reduced pressure)
usng a flow of tap water. This can be used in Buchner filtrations,
vacuum distillations or with rotary evaporators. |
| Azeotrope |
A mixture
of two or more liquids that cannot be separated by simple distillation.
An application of this is the addition of a second solvent to a solution
to produce a lower boiling azeotrope of the two solvents which is
easier to remove by evaporation. |
